Take the guess work out of finding a matched pair of springs.

DR. OOGAN SPRINGS ARE MADE IN THE USA from high quality bronze phosphor wire to give you the repeatable results you need. They are precision wound, heat treated and stress relieved for long lasting resilience. Both ends are also "closed & squared" to allow for proper perpendicular seating.  

Though originally designed for serious racers, Dr. Oogan springs are the best choice for non competitive racing as well.  Because they are precision made to high tolerances and use wire superior to that of the originals, they are the most popular replacement spring for all variations of the T-Jet and AFX chassis.